My objective is to have these following settings set in Firefox browser for all of our users during the silent install deployment:To Enable Pop-upsTo increase the disk cache to 1024MBTo set the disk max entry to -1Limit the open tabsHome Page to our company website.

So the user is not installing FF (per se).They are running FF & you want specific settings applied to their Profile.

Peruse this "no update" thread, viewtopic.php?p=14802021#p14802021.autoconfig.js is discussed there.If what I came up with is somewhat close to how things work, autoconfig.js is they way to go about it, I'd think.Likewise, if I'm understanding, user_pref("... is the syntax for a prefs.js (or user.js), but for your own configuration file, you'd want to drop the user_ part, so only pref("...